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Title: The Surface Wave Magnitude for the 9 October 2006 North Korean Nuclear Explosion

The Surface Wave Magnitude for the 9 October 2006 North Korean Nuclear Explosion Surface waves were generated by the North Korean nuclear explosion of 9 October 2006 and recorded at epicentral distances up to 34 degrees, from which we estimated a surface wave magnitude (M{sub s}) of 2.94 with an interstation standard deviation of 0.17 magnitude units. The International Data Centre estimated a body wave magnitude (m{sub b}) of 4.1. This is the only explosion we have analyzed that was not easily screened as an explosion based on the differences between the M{sub s} and m{sub b} estimates. Additionally, this M{sub s} predicts a yield, based on empirical M{sub s}/Yield relationships, that is almost an order of magnitude larger then the 0.5 to 1 kiloton reported for this explosion. We investigate how emplacement medium effects on surface wave moment and magnitude may have contributed to the yield discrepancy.
Authors: ; ; ;
Publication Date:
OSTI Identifier:OSTI ID: 945149
Report Number(s):LLNL-JRNL-402269
Journal ID: ISSN 0037-1106; BSSAAP; TRN: US200902%%1251
DOE Contract Number:W-7405-ENG-48
Resource Type:Journal Article
Resource Relation:Journal Name: Bulletin of the Seismological Society of America, vol. 98, no. 5, October 1, 2008, pp. 2498-2506; Journal Volume: 98; Journal Issue: 5
Research Org:Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Org:USDOE
Country of Publication:United States
Language:English
Subject: 58 GEOSCIENCES; EXPLOSIONS; NUCLEAR EXPLOSIONS; POSITIONING